CBB runner-up Katie came to blows with Coleen during an appearance on Loose Women on Monday lunchtime and the dust has still not settled.
While chatting about this year's series of CBB, Coleen took the opportunity to confront Katie about hurtful comments she made about her sister Linda last year.
While Linda was appearing on the January 2013 series of CBB, Katie made jibes about her breasts and size of her arm, which Coleen pointed out was the result of breast cancer and a mastectomy.
After the show had aired on ITV1, Katie took to Twitter and made a dig at Coleen's figure, "advising" her to watch her recent documentary about weight loss and weight gain.
Then, the following day, Coleen's sister Anne waded in and branded Katie a "vile failure".
Just when we thought the row had fizzled out, Katie has today hit out again while writing about her Loose Women interview in The Sun.
She told her column readers: "I agreed to appear on Loose Women to chat about my experiences on Celebrity Big Brother. Sadly, the panelists had other ideas.
"Coleen Nolan was determined to talk about tweets from a year ago when I defended Jim Davidson from her bullying sister."
Katie then went on to poke fun out of Coleen's co-star Janet Street-Porter's teeth, before adding: "The moose women were not at their professional best.
"I wish them well in their search for jobs when the exces see sense and dispense with their services."
Surely it's time this bust-up was well and truly put to bed?